Math Rock

Math Rock is a relatively new sub-genre of rock music, characterized by complex, atypical rhythms (often including irregular stopping and starting), frequent use of irregular time-signatures, and dissonant, angular guitars. Math rock peaked in the mid-'90s, when groups like Polvo and Chavez had small but dedicated followings among indie rockers on college campuses.
It is related to post-rock, a result of a shared scene of origin. There are differences to be noted between early post-rock and math-rock as well Read more on Last.fm.